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- 1. Multiple Choice
Based on the solubility chart, which of the listed salts is the most soluble at 40°C?KClKClO3KNO3Pb(NO3)2 - 2. Multiple ChoiceWhat conclusion can be made using this solubility curve?Decreasing temperatures always increases solubilityIncreasing temperatures always increases solubilityIncreasing temperatures usually increases solubilityTemperature has no affect on solubility
- 3. Multiple ChoiceWhich compound listed demonstrated the GREATEST increase of solubility as a result of an increase in temperature?KNO3KClNaClKClO3
- 4. Multiple ChoiceConsider the salts represented on the solubility curves displayed as line graphs. In all cases the salts are which part of an aqueous solution?precipitatesolventsoluteconcentrate
- 5. Multiple ChoiceWhat property do all three of these common household substances have in common?they are all basicthey taste sourthey have a pH below 7they all turn litmus paper red
- 6. Multiple ChoiceWhat does this solubility curve show?Solubility increases as temperature increasesSolubility decreases as temperature decreasesSolubility decreases as concentration increasesSolubility is not affected by temperature
- 7. Multiple ChoiceIf you have a solution that is very acidic with a pH of 3.5, what can you do to raise the pH?add more acidadd more waterincrease the temperatureadd a base
- 8. Multiple ChoiceWhen Sally tested an unknown substance, her red litmus paper turned blue but her blue litmus paper did not change color. What is the solution?AcidBaseneutralworld peace
- 9. Multiple ChoicePalmer puts 10 grams of salt in 100 grams of water. He then puts 50 grams of salt in 100 grams of water. Compare the concentrations of the two solutionsboth mixtures are acidsboth mixtures are basesthe first solution is more diluted while the second one is more concentratedthe first one is more concentrated while the second one is more diluted
- 10. Multiple ChoiceAccording to the pH scale, which of the following would be true?baking soda is a weak base while drain cleaner is a strong baselemon is a weaker acid than a bananatomato and soap are acidicvinegar is less acidic than an apple
- 11. Multiple ChoiceWhich of the following would NOT be a way to speed up the rate of solubility of rock salt?stir itheat the watercrush the saltcool the water
- 12. Multiple ChoiceWhich characteristics describe a base?sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)neutral, pH of 7sour, indicator turns red, pH greater than 7
- 13. Multiple ChoiceWhich characteristics describe an acid?sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)neutral, pH of 7sour, indicator turns red, pH greater than 7
- 14. Multiple ChoiceWhat substance would do the best job of cleaning pots and pans?a substance with a pH of 7a substance with a pH of 2a substance with a pH of 4a substance with a pH of 8
- 15. Multiple ChoiceWhat might happen if you mixed a strong acid with an equally strong base?explosive chemical reactiona pH neutral substancethe base would destroy the acidthe acid would destroy the base
- 16. Multiple ChoiceAn extremely strong base would have a pH of...17914
- 17. Multiple ChoiceAn extremely strong acid would have a pH of...17914
- 18. Multiple ChoiceA weak acid would have a pH of...17614
- 19. Multiple ChoiceA weak base would have a pH of...87614
- 20. Multiple ChoiceA neutral substance would have pH of...87614
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